function withData(param) {
    return param < 10 ? '0' + param : '' + param;
}
function getLoopArray(start, end) {
    var start = start || 0;
    var end = end || 1;
    var array = [];
    for (var i = start; i <= end; i++) {
        array.push(withData(i));
    }
    return array;
}
function getMonthDay(year, month) {
    console.log(year, month)
    var flag = year % 400 == 0 || (year % 4 == 0 && year % 100 != 0), array = null;
    switch (month) {
        case '01':
        case '03':
        case '05':
        case '07':
        case '08':
        case '10':
        case '12':
            array = getLoopArray(1, 31)
            break;
        case '04':
        case '06':
        case '09':
        case '11':
            array = getLoopArray(1, 30)
            break;
        case '02':
            array = flag ? getLoopArray(1, 29) : getLoopArray(1, 28)
            break;
        default:
            array = '月份格式不正确，请重新输入！'
    }
    return array;
}
function getNewDateArry() {//如果dateTimePicker的date不可能为空，此处可以省略
    // 当前时间的处理
    var newDate = new Date();
    var year = withData(newDate.getFullYear()),
        mont = withData(newDate.getMonth() + 1),
        date = withData(newDate.getDate()),
        hour = withData(newDate.getHours()),
        minu = withData(newDate.getMinutes()),
        seco = withData(newDate.getSeconds());

    return [year, '年', mont, '月', date, '日', hour, ':', minu,':', seco];
}
function getcurrent(date) {
    console.log(date)
    var d = new Date(date);
    console.log(d)
    var year = withData(d.getFullYear()),
        month = withData(d.getMonth() + 1),
        dat = withData(d.getDate()),
        hour = withData(d.getHours()),
        minu = withData(d.getMinutes()),
        seco=withData(d.getSeconds());
    return [year, '年', month, '月',dat , '日',hour , ':',minu ,':',seco]
}
function dateTimePicker(startYear, endYear, date) {
    var datearr = [];
    if (date) {
        datearr = getcurrent(date);
    }
    console.log(datearr)
    // 返回默认显示的数组和联动数组的声明
    var dateTime = [], dateTimeArray = [[], [], [], [], [], [], [], [], []];
    var start = startYear || 1978;
    var end = endYear || 2100;
    // 默认开始显示数据
    var defaultDate = date ? datearr : getNewDateArry();
    console.log(defaultDate)
    // 处理联动列表数据
    /*年月日 时分*/
    dateTimeArray[0] = getLoopArray(start, end);
    dateTimeArray[1] = ['年'];
    dateTimeArray[2] = getLoopArray(1, 12);
    dateTimeArray[3] = ['月'];
    dateTimeArray[4] = getMonthDay(defaultDate[0], defaultDate[2]);
    dateTimeArray[5] = ['日'];
    dateTimeArray[6] = getLoopArray(0, 23);
    dateTimeArray[7] = [':'];
    dateTimeArray[8] = getLoopArray(0, 59);
    dateTimeArray[9] = [':'];
    dateTimeArray[10] = getLoopArray(0, 59);

    dateTimeArray.forEach((current, index) => {
        dateTime.push(current.indexOf(defaultDate[index]));
    });

    return {
        dateTimeArray: dateTimeArray,
        dateTime: dateTime
    }
}
module.exports = {
    dateTimePicker: dateTimePicker,
    getMonthDay: getMonthDay
}